Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime | |
Sun CQ(孙成奇); Song QY; Hu YP(胡远培); Wei YJ(魏宇杰) | |
Source Publication | INTERNATIONAL JOURNAL OF FATIGUE |
2018-12-01 | |
Volume | 117Pages:9-12 |
ISSN | 0142-1123 |
Abstract | An intermittent loading path (i.e. a pause duration follows after a loading pulse) is broadly employed in a ultrasonic fatigue test to minimize the effect of self-heating in specimens. The exact influence of such intermittent loading strategy remains elusive. We report here a significant fatigue life improvement of a high strength steel in very high cycle fatigue regime subjected to intermittent loading, in contrast to that without the pause duration although the crack initiation mechanism remains the same. This phenomenon is attributed to the strain aging by the numerous low stress amplitude cycles under intermittent loading, which strengthens the local region ahead of the initiated crack tip by the former high stress amplitude cycles and improves the fatigue life. |
Keyword | Very high cycle fatigue High strength steels Intermittent loading Ultrasonic fatigue technique |
DOI | 10.1016/j.ijfatigue.2018.07.033 |
URL | 查看原文 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000449240200002 |
WOS Keyword | LOW-CARBON STEEL ; METALLIC MATERIALS ; FREQUENCY ; BEHAVIOR |
WOS Research Area | Engineering, Mechanical ; Materials Science, Multidisciplinary |
WOS Subject | Engineering ; Materials Science |
Funding Organization | National Natural Science Foundation of China [11572325, 11425211] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040503, XDB22020201, XDB22020200] |
Classification | 一类 |
Ranking | 1 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/78137 |
Collection | 非线性力学国家重点实验室 |
Affiliation | Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China; Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Sun CQ,Song QY,Hu YP,et al. Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime[J]. INTERNATIONAL JOURNAL OF FATIGUE,2018,117:9-12. |
APA | 孙成奇,Song QY,胡远培,&魏宇杰.(2018).Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime.INTERNATIONAL JOURNAL OF FATIGUE,117,9-12. |
MLA | 孙成奇,et al."Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime".INTERNATIONAL JOURNAL OF FATIGUE 117(2018):9-12. |
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